Attachment for telephone-mouthpieces.



B. C. MAXWELL. ATTACHMENT FOR- TELEPHONE MOUTHIIEGES.v APPLICATION311.111) NOV. 1a, 1908. RENEWED SEPT. 27,1909

95L25 Patentsd Mar. 15, 1910.

a' very different principle,

hen erases Learner semen.

BERT c. MAXWELL, or cannon, OHIO.

ATTACHMENT FOR TELEPHONE-MOUTHPIECES.

To all whom it may concern:

Be it known that I, BERT C. MAXWELL, a citizen of the United States,residing at Canton, of 0 io, have invented a certain new and usefuImprovement in Attachments for 'lelephione-Iilouthpieces, of which thefollowing is a full clear, and exact description.

It is generally recognized that disease germs are. often deposited intelephone mouth pieces by persons using the telephone; and thatsubsequently users of said mouth pieces may become infected therebybecause as they talk into the mouth pieces the dirt and germs are blownout into their faces, and they inhale them. This has led to theinvention of various devices to be attached to the permanent telephonemouth pieces for the purpose of preventing these injurious results.Generally speaking, these devices have included a germicide holder, andhave been constructed on the theory that in order tobe efi'ective theymust trap the germs in the mouth piece and kill them by the germicide.

The present invention is constructed on namely, that of piece without-going discharge away from air currents caused by into the mouthpiece, germsjand dirt and disproviding the mouth passage Ways which theuser so that the the user, as he talks will blow out the charge them ina direction which is not fraught with danger to him.

The invention consists in the combination with the permanent frustoconical mouth piece of a telephone. transmitter, of a supplementalfrusto-conical mouth piece of smaller diameter-secured therein andhaving its outer edges rolled backward over the edges of the permanentmouth piece but out of contact therewith, whereby, there is formed,between the supplemental mouth piece and the permanent mouth ,piece, annular air passageways hich are deflected backward by the curved edge ofthe at.- tachment.

This invention is capable of being embodied in a great variety ofspecific forms. The form which I regard as most complete theconstruction, Fig. 2 is a side view of the removable center of saldattachment.

in the county of Stark and State rolled inward and forward, thereby outdisturbing or and most sanitary that which shown shows the attachmentapplied to a telephone mouth pi'cce,'the

pieces,

Specification of Letters Patent. Patented lilai'. 15, 191(9- Applicationfiled November 18, 1908, Serial No. 483,134.

Renewed September 27, 1909. Serial No. 519,872.

Referring to the parts by letters, A represents the permanentfrusto-conical mouth piece of a telephone transmitter; and B represents,a trusto-conieal attachment having an outwardly and 'rearwardly curvedmargin or edge [)1 This attachment is of smaller diameter than themouth-piece A, and is to be secured ticn that the twov are not incontact, and the curved edge of the attachment rolls over the edge ofthe mouth piece A. As shown, these small spring clasps C are employedfor the purpose, When the attachment is secured in the permanent mouthpiece in theposition shown, there is be tween them an annular airpassage-way which curves 'rearwardly around the for- .ward edge of thepermanent mouth piece.

When a. person talks into mouth piece equipped with this attachment, aircurrents are produced, which flow in the paths indicated by thearrows,-the out going cur rents, which have perhaps gathered uo' germsand dust from the permanent Inout piece, flowing through the way andbeing deflected backward by the rolled over edge of the attachmentwherefore they are not discharged into the face of the user.

It Will. be noted thatthe edge b of the attachment outside of the mouthiece is torming an annular trou 'h b, in which the dust is partiallytrapped. The attachment may be removed and cleaned from time to time.

In the best constructions, the attachment is made With a detachablecenter 6", which is preferably made of paper. It is formed so as to fitfriction tight in the other part,

audit has an outwardly extended annular flange intended to be in contactwith the outer face of the other part of the attachment. It is intendedthat each userot a telephone shall put in a clean fresh part If beforehe uses the teleph ne.

A. secondary, but by no means unitnpor: taut, purpose of this inventionis" to provide a suitable exit for outgoing sound pass from thetelephone transmitter withfresisting ingoing sound waves.

Having described In invent-ion, I claim:

1. An attachment or telephone mouth comprising a frusto-conical member,having its outer edge rolled outward, and means by which this member maybe secured therein in such. posiannular passage waves to l mule womb pmcanti with new he combi ppm: 111011111 pi V g'oer may law! 011% m

